build: drop the workaround for a GCC bug #598

Job	Run time
Test with DPDK enabled / test	11m 16s
Test with C++20 modules enabled / test	11m 34s
Test (clang++, C++20, debug) / test	15m 42s
Test (clang++, C++20, dev) / test	4m 15s
Test (clang++, C++20, release) / test	4m 36s
Test (clang++, C++23, debug) / test	16m 12s
Test (clang++, C++23, dev) / test	4m 10s
Test (clang++, C++23, release) / test	15m 26s
Test (g++, C++20, debug) / test	18m 48s
Test (g++, C++20, dev) / test	4m 7s
Test (g++, C++20, release) / test	4m 49s
Test (g++, C++23, debug) / test	19m 7s
Test (g++, C++23, dev) / test	4m 7s
Test (g++, C++23, release) / test	4m 53s
	2h 19m 2s

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